Lexis+ AI

Hallucination-free AI legal research with authoritative LexisNexis sources

Guru

AI enterprise knowledge management that surfaces the right information in the right workflow

Lexis+ AI

Strong

21/25

Guru

Moderate

13/25

Score Breakdown

DimensionLexis+ AIGuru

Data Residency

Where is your data stored and processed?

Lexis+ AI: Data hosted across US, EU, and UK data centres. Strong data residency options for law firms in major common law and civil law jurisdictions. UK GDPR compliance post-Brexit.

Guru: Hosted on AWS US region; no EU or regional data residency options publicly available

4/5

Data hosted across US, EU, and UK data centres. Strong data residency options for law firms in major common law and civil law jurisdictions. UK GDPR compliance post-Brexit.

2/5

Hosted on AWS US region; no EU or regional data residency options publicly available

Legal Jurisdiction

Which laws govern the company and your data?

Lexis+ AI: Parent company RELX PLC is UK/EU incorporated and regulated. LexisNexis US entity is incorporated in Delaware but operates under RELX's broader European governance framework, providing strong data protection oversight.

Guru: US Delaware corporation subject to CLOUD Act; GDPR DPA available; SCCs for EU data transfers

4/5

Parent company RELX PLC is UK/EU incorporated and regulated. LexisNexis US entity is incorporated in Delaware but operates under RELX's broader European governance framework, providing strong data protection oversight.

2/5

US Delaware corporation subject to CLOUD Act; GDPR DPA available; SCCs for EU data transfers

Data Retention & Training

Is your data used for model training?

Lexis+ AI: Clear data retention policies aligned with legal professional requirements. Research queries and documents are not retained for AI training. Supports data processing agreements for enterprise law firms.

Guru: Customer knowledge content not used for model training; configurable retention and deletion; GDPR-compliant DPA

4/5

Clear data retention policies aligned with legal professional requirements. Research queries and documents are not retained for AI training. Supports data processing agreements for enterprise law firms.

4/5

Customer knowledge content not used for model training; configurable retention and deletion; GDPR-compliant DPA

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Lexis+ AI: Holds SOC 2 Type II, ISO 27001, and ISO 27701 certifications. Strong certification portfolio appropriate for a platform handling confidential legal information.

Guru: SOC 2 Type II certified; no ISO 27001 or additional certifications publicly confirmed

4/5

Holds SOC 2 Type II, ISO 27001, and ISO 27701 certifications. Strong certification portfolio appropriate for a platform handling confidential legal information.

2/5

SOC 2 Type II certified; no ISO 27001 or additional certifications publicly confirmed

Regulatory Fit

Suitability for regulated industries and professional services

Lexis+ AI: Excellent regulatory fit for law firms and legal departments. Compliance with bar association professional responsibility rules, GDPR, UK GDPR, and CCPA. Trusted by government agencies and Am Law 100 firms.

Guru: Verification and governance model well-suited to compliance knowledge management; limited data residency options

5/5

Excellent regulatory fit for law firms and legal departments. Compliance with bar association professional responsibility rules, GDPR, UK GDPR, and CCPA. Trusted by government agencies and Am Law 100 firms.

3/5

Verification and governance model well-suited to compliance knowledge management; limited data residency options

Total Score

21/25

13/25

Best For

Lexis+ AI

Best for privacy-conscious teams who need strong data retention controls; teams on a tight budget.

Guru

Best for EU-headquartered organisations needing maximum data sovereignty; organisations requiring broad certification coverage (SOC 2 Type II, ISO 27001, ISO 27701); regulated industries (FCA, SRA); privacy-conscious teams who need strong data retention controls.

Detailed Comparison

Guru vs Lexis+ AI: Trust & Compliance Comparison

Guru (Guru Technologies, US) scores 13/25 overall with a Bronze (Moderate) trust badge. AI enterprise knowledge management that surfaces the right information in the right workflow. Lexis+ AI (LexisNexis, GB) scores 21/25 with a Silver (Strong) trust badge. Hallucination-free AI legal research with authoritative LexisNexis sources.

Dimension-by-Dimension Breakdown

#### Data Residency

Lexis+ AI leads with 4/5 vs 2/5.

●Guru (2/5): Hosted on AWS US region; no EU or regional data residency options publicly available

●Lexis+ AI (4/5): Data hosted across US, EU, and UK data centres. Strong data residency options for law firms in major common law and civil law jurisdictions. UK GDPR compliance post-Brexit.

#### Legal Jurisdiction

Lexis+ AI leads with 4/5 vs 2/5.

●Guru (2/5): US Delaware corporation subject to CLOUD Act; GDPR DPA available; SCCs for EU data transfers

●Lexis+ AI (4/5): Parent company RELX PLC is UK/EU incorporated and regulated. LexisNexis US entity is incorporated in Delaware but operates under RELX's broader European governance framework, providing strong data protection oversight.

#### Data Retention & Training

Both score equally at 4/5.

●Guru (4/5): Customer knowledge content not used for model training; configurable retention and deletion; GDPR-compliant DPA

●Lexis+ AI (4/5): Clear data retention policies aligned with legal professional requirements. Research queries and documents are not retained for AI training. Supports data processing agreements for enterprise law firms.

#### Certifications

Lexis+ AI leads with 4/5 vs 2/5.

●Guru (2/5): SOC 2 Type II certified; no ISO 27001 or additional certifications publicly confirmed

●Lexis+ AI (4/5): Holds SOC 2 Type II, ISO 27001, and ISO 27701 certifications. Strong certification portfolio appropriate for a platform handling confidential legal information.

#### Regulatory Fit

Lexis+ AI leads with 5/5 vs 3/5.

●Guru (3/5): Verification and governance model well-suited to compliance knowledge management; limited data residency options

●Lexis+ AI (5/5): Excellent regulatory fit for law firms and legal departments. Compliance with bar association professional responsibility rules, GDPR, UK GDPR, and CCPA. Trusted by government agencies and Am Law 100 firms.

Certifications at a Glance

Certification	Guru	Lexis+ AI
ISO 27001	No	Yes
ISO 27701	No	Yes
SOC 2 Type II	Yes	Yes

Overall Verdict

Lexis+ AI has a clear trust advantage, scoring 21/25 compared to Guru's 13/25. Lexis+ AI particularly excels in data residency, legal jurisdiction, certifications, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, Lexis+ AI or Guru?

Lexis+ AI has a TrustKit score of 21/25 while Guru scores 13/25. Lexis+ AI currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Lexis+ AI and Guru compare on data residency?

Lexis+ AI scores 4/5 for data residency (Data hosted across US, EU, and UK data centres. Strong data residency options for law firms in major common law and civil law jurisdictions. UK GDPR compliance post-Brexit.), while Guru scores 2/5 (Hosted on AWS US region; no EU or regional data residency options publicly available).

Are Lexis+ AI and Guru GDPR compliant?

Both tools are assessed across five compliance dimensions. Lexis+ AI has a regulatory fit score of 5/5 and Guru scores 3/5. Check the full comparison above for a detailed breakdown.

Explore Each Tool